Add facility for emitting heap profile marker
When analysing heap profile diagrams I often want correlate certain points in the program execution with the corresponding point in the heap profiling diagram.
Currently, I resort to causing flatlines by burning cpu cycles with some dummy calculations which don't cause too much GC activity. But this is just a crutch, and doesn't work too well for concurrent/parallel Haskell programs.
It would be helpful to have a GHC facility to emit custom marker "events" (maybe with an user-suppliable associated numeric identifier to differentiate between multiple markers) to the heap-profile which could then be directly looked up in the resulting heap profile diagram (rather than having to recognize geometric graph features in the diagram).
Trac metadata
Trac field | Value |
---|---|
Version | |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Profiling |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |